[R] coxph with cluster() model selection

From: Richard Chandler <rchandler_at_forwild.umass.edu>
Date: Thu 11 Aug 2005 - 05:33:23 EST


Can someone suggest a strategy of selecting a parsimonious coxph model when there is a cluster() term, a frailty() term and several potentially important covariates? I have read in the R-help archives that AIC can not be used when cluster() is.

My full model looks something like:

fit <- coxph(Surv(start, stop, fate) ~ x1 + x2 + x3 + x4 + cluster(site) + frailty(year), data)

Thank you.


Richard Chandler
Department of Natural Resources Conservation
UMass Amherst

R-help@stat.math.ethz.ch mailing list
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Received on Thu Aug 11 05:39:53 2005

This archive was generated by hypermail 2.1.8 : Sun 23 Oct 2005 - 15:13:08 EST